SmbNegotiationResponse nego = transport.getNegotiateResponse();
            if ( nego instanceof SmbComNegotiateResponse ) {
                return ( (SmbComNegotiateResponse) nego ).getServerData().serverTimeZone * 1000 * 60L;
            }
            return 0;
        }
    }


    /**
     * {@inheritDoc}
     * 
     * @throws SmbException
     *

                        }
                    }
                    else {
                        log.debug("Initialize signing");
                        byte[] signingKey = npa.getSigningKey(getContext(), negoResp.getServerData().encryptionKey);
                        if ( signingKey == null ) {
                            throw new SmbException("Need a signature key but the server did not provide one");
                        }

        super(tc.getConfig(), SMB_COM_SESSION_SETUP_ANDX, andx);
        this.negotiated = negotiated;
        this.capabilities = negotiated.getNegotiatedCapabilities();
        ServerData server = negotiated.getServerData();
        if ( server.security == SmbConstants.SECURITY_USER ) {
            if ( cred instanceof NtlmPasswordAuthenticator ) {
                NtlmPasswordAuthenticator a = (NtlmPasswordAuthenticator) cred;

     */
    @Override
    public boolean isSigningRequired () {
        return this.server.signaturesRequired;
    }


    /**
     * @return the server
     */
    public ServerData getServerData () {
        return this.server;
    }


    @Override
    protected int writeParameterWordsWireFormat ( byte[] dst, int dstIndex ) {
        return 0;
    }


    @Override

                        request = new SmbComTreeConnectAndX(
                            sess.getContext(),
                            ( (SmbComNegotiateResponse) nego ).getServerData(),
                            unc,
                            svc,
                            (ServerMessageBlock) andx);
                    }

                    response = sess.send(request, response);

        if ( this.negotiated == null ) {
            return null;
        }

        if ( this.negotiated instanceof SmbComNegotiateResponse ) {
            return ( (SmbComNegotiateResponse) this.negotiated ).getServerData().encryptionKey;
        }
        return null;
    }


    @Override
    public boolean isSigningOptional () throws SmbException {
        if ( this.signingEnforced ) {
            return false;